这是一个用java开发的工作流引擎，支持PetriNet工作流建模-This is a java with the development of the engine, support for workflow modeling PetriNet

bossa API 软件代码,bossa does not require a RDBMS and is very simple to use and to integrate with java applications. Actually, it was designed to be embedded. Therefore, bossa is organized as a library to be used by server side applications (especially w